IMEG is providing comprehensive mechanical, electrical, plumbing, and structural engineering design services for the renovation of Springfield’s City Hall, as well as LEED modeling and commissioning support. Originally built in 1894 as a U.S. Customs House and Post Office, this historic landmark will undergo renovations that honor its architectural heritage while modernizing its systems for the future.

Key upgrades include the installation of new mechanical, electrical, and plumbing systems, accessibility improvements, and the integration of advanced technology to create a modern workplace. Additionally, critical deferred maintenance will be addressed, such as hazardous material abatement, roof replacement, and structural repairs.

New systems include an air-cooled chiller to condition the building, a glycol-to-water heat exchanger to limit glycol use, and high-efficiency gas-fired condensing boilers for cooling. The Council Chambers will be served by a VAV air handling unit with chilled water and heating coils, along with a fan wall system. 4-pipe hydronic fan coil units will condition the rest of the building, both horizontal and vertical, while DOAS units with enthalpy energy recovery wheels and hydronic coils will provide ventilation and pressurization. To address low water pressure, a domestic water booster pump and fire pump will be installed, along with low-water-use plumbing fixtures. Electrical upgrades include a new electrical service, LED lighting, fire alarm system, and rough-ins for data and AV systems.

Structurally, IMEG’s design focuses on five key elements: the addition of a new elevator, the construction of a new central staircase, modifications to remove an existing column in the council overflow/media room, the creation of an exterior mechanical pit, and the development of a new entry vestibule.